Valve.



L. A SHERMAN.

VALV

APPLICATION FILED SEPT. 14, 1914.

Patented June 22, 1915.

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LOUIE A. SHERMAN, O13 KANSAS CITY, MISSOURI, ASSIGNOR TO ROTARY VALVE MANU- FACTURING COMPANY, OF KANSAS CITY,'-1VIISSOUR-I, A CORPORATION OF MISSOURI.

VALVE.

- Specification of Letters Patent.

Patented June 22, was.

Application -fi1ed eptember 14, 1914. Serial No. 861,510.

To /17 11:71 om it may concern:

Be it known that I, Loom A. SHERMAN, a citizen of the United States, residing at Kansas City. in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Valves; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the s me, reference being had to the accoinpanyingdrawings, and to the letters and figures of reference marked thereon,'which form a part of this specification.

My invention relates to a rotary valve for explosive engines, and has for its principal object, to provide a device of this character, wherein the intake and exhaust members are balanced relative to the explosion chamber, to obviate thrust and friction of the valve members in their casing.

It is also an object of the invention to provide a rotary valve wherein the intake of clean gas passes over the spark plug to scour the plug while the valve is in operation.

. It is also an object of the invention to provide a rotary valve wherein all of the valve members for a plurality of cylinders may be mounted. on a common shaft to insure proper timing.

In accomplishing these and other objects of the invention. I have provided the improved details of structure hereinafter described and illustrated in the accompanyinc! drawin s, wherein:

Figure I is a perspective view of an explosive engine equipped with a rotary valve constructed in accordance with my invention. Fig. II is an enlarged longitudinal section of an engine cylinder and valve casing on the line II'II. Fig. III. showing the spark plug and its relation to the valve and cylinder. Fig. III is a cross section on the line IIIIII, Fig. II, showing. the valve in longitudinal section and illustrating its r elation to the intake, exhaust and cylinder ports. Fig. IV is an end view of the cylinder head, showing the relative positions of the valve ports. Fig. V is an enlarged detail perspective of the valve sleeve, showing the spark plug, and the exhaust and cylinder ports. Fig. VI is a detail perspective view of the valve, showing the spaced valve members with their ports.

Referring more in detail to the parts, 1 designates an explosive engine of any ordinary type, and comprising a single cylindcr 2, a connecting rod crank shaft 4 and fly-wheels the said cylinder comprising a casing having an ordinary water jacket 7, and having its open outer end closed by a head 8, having a water jacket 9 communicating with the casing acket 7.

The combined water jacket 79 is fed through circulating pipes 10 and 11 in the ordinary manner and for the usual purpose, and the cylinder 2 is provided with the ordinary reciprocatory piston 12.

On the outer face of the cylinder head 8, is a transverse boss 14, having a longitudinal channel 15 provided with a port 16 that opens into the cylinder chamber 17 and oppositc the cylinder port 16, with an aperture 19 for containing an ordinary spark plug 20; the arrangement described locating the spark plug outwardly from the center of the cylinder and feed port 16.

Fixed in the head boss channel 15 is a sleeve 21, having its ends closed by cap members 22 that are provided with central bearings 93 for carrying a rotary valve shaft 24, which will'presently be described; the body of the sleeve being provided with a port 25 that registers with the cylinder port 16 and exhaust'port 26 that opens into an exhaust pipe 27 that leads from the'cylinde'r, and an intake port 28 (Fig. III) that opens into a feed conduit 29 through which fuel gas is delivered to thevalve from'a carbureter 30 (Fig. I).

Fixed on the shaft 24 within the sleeve 21. preferably by Welding, or in any suitable manner, are spaced valve-bells 32-32, each of which has a closed outer end 33 and open inner end 34; the open ends of the bells being spaced to'form an annular port that constantly registers with the port 25 in the fixed sleeve 21, and with the cylinder port 16; the shaft 24 having bosses 35 there- 100 on for engaging the closed ends of the valvebells to positively space same and maintain the delivery width.

The valve-bell 32 is provided with a port 37 that is adapted to register with the intake port 28. in the fixed sleeve 21 and the other .valve-bel1-32' has a similar port 38 that is free rotation in its sleeve, but at the same time prevent leakage of gas to or from the cylinder.

The spark plug 20 that is fixed in the aperture 19 in the outer face of the head boss 8. is of any ordinary construction, and its inner end is threaded into an aperture 41 in the sleeve 21 to hold the valve and sleeve in' place and properly center the plug over the cylinder port. v

lVhile I have shown the engine as of a one cylinder type,'it is apparent that any number ofcylinders may be used. and that when the cylinders are arranged in parallel relation, the valves for all of the cylinders may be mounted on the same shaft, in order to secure proper timing in all of the cylinders.

As a means for rotating the shaft and valves, I show the shaft 24 provided with a worm gear 43, which meshes with a mating gear 44 on a shaft 45 thatis driven by a suitable gearing 46 from the crank shaft 4, although'I do not wish to limit myself to anyparticular mechanism for rotating the va ve.

In using the valve, presuming the parts to be constructed and assembled as described, when the engine is in operation, gas is taken from the carburetor to the valve-bell 32, so that when the valve portopens to the intake, the gas passes into and through the valve and over the spark plug into the cylinder. Compression takes place as usual, and when the charge is exploded, the engine is cleaned in the usual manner; the parts being so combined and arranged that the cleaning stroke of the e gine occurs as the port in the exhaust va ve-bell 32 comes into registration with the exhaust pipe.

It is apparent that with this construction the valve is always open to the cylinder, and that the compression; and expansion following an explosion is communicated to the valve-bells and valve sleeve, so that thrust and friction must necessarily occur.

By arranging the valve as described, the thrust and friction is balanced, so that there is no twisting strain on the valves or their carrying shaft.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters-Patent, is:

l. The combination with an engine cylinder, of a valve chamber having a cylindrical channel, a sleeve fixed in said channel and provided with intake and exhaust ports, and having an intermediate cylinder port, intake and exhaust conduits in constant communication with the sleeve intake and exhaust ports, a shaft rcvolubly mounted in the sleeve, and paired valves fixed on the shaft and spaced on opposite sides of the cylinder intake port. and having intake and exhaust ports adapted for intermittent registration with the sleeve intake and exhaust ports.

2. The combination with an engine cylinder, of a valve chamber having a cylindrical channel, a sleeve fixed in said channel and provided with intake and exhaust ports. and having an intermediate cylinder port, intake and exhaust conduits in constant communication with the sleeve intake and exhaust ports. a shaft revolubly mounted in the sleeve. paired valves fixed on the shaft and spaced on opposite sides of the cylinder intake port, and having intake and exhaust ports adapted for intermittent registration with the sleeve intake and exhaust ports, and a spark plug projected through the sleeve and between the valves.

3. A rotary valve comprising a sleeve having a laterally opening slot, an aperture opposite said slot adapted to receive a sparkplug. and a port adjacent each side of said slot, and a pair of facing valve members adjacent opposite sides of the slot and sparkplug, and having apertures adapted for successive registration with said ports.

4. A rotary valve comprising a sleeve having. a plurality of apertures. a bearing plate in each end of said sleeve, a shaft revolubly mounted in said bearing plates, a pair of facing valve members rigidly mounted on said shaft having apertures adapted for successive registration with said sleeve ports.

5. A rotary valve comprising a sleeve having a laterally opening slot, an aperture opposite said slot for receiving a. spark-plug. and a port adjacent each side of said slot, a bearing plate in each end of said sleeve, a

shaft revoluhly mounted in said hearing plates, and a pair of inwardly facing valve members rigidly mounted on said shaft adjacent the sides oi said slot and on opposite sides of said spark-plug, and having apertures adapted for successive registration with said sleeve ports.

' 6. The combination with an engine cylinmiaeee with the intake and exhaust ports of the cylinder, a bearing plate in each end of said sleeve, a shaft revolubly mounted in said head, a pair of inwardly facing valve mem bers on said shaft, having apertures adapted for successive registration with said sleeve 10 ports, and means for actuating-said valve members.

In testimony whereof I afix my signature in presence of two Witnesses.

LOUIE A. SHERMAN. Witnesses:

RETTA F. THOMAS, LETA E. Cons.

flopilea off this patent may be ebtainefl for five cents each, by addressing the tlommissioner of ii'atenta,

Washington, D. G. 

